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package dk.thoerup.traininfoservice.banedk; |
package dk.thoerup.traininfoservice.banedk; |
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import java.sql.Connection; |
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import java.sql.ResultSet; |
import java.net.URL; |
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import java.sql.Statement; |
import java.net.URLEncoder; |
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import java.util.ArrayList; |
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import java.util.Collections; |
import java.util.Collections; |
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import java.util.List; |
import java.util.Map; |
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import java.util.logging.Logger; |
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import com.gargoylesoftware.htmlunit.WebClient; |
import org.jsoup.nodes.Document; |
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import com.gargoylesoftware.htmlunit.html.DomNodeList; |
import org.jsoup.nodes.Element; |
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import com.gargoylesoftware.htmlunit.html.HtmlElement; |
import org.jsoup.select.Elements; |
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import com.gargoylesoftware.htmlunit.html.HtmlPage; |
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import dk.thoerup.traininfoservice.DBConnection; |
import dk.thoerup.circuitbreaker.CircuitBreaker; |
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import dk.thoerup.circuitbreaker.CircuitBreakerManager; |
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import dk.thoerup.traininfoservice.StationBean; |
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import dk.thoerup.traininfoservice.StationDAO; |
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import dk.thoerup.traininfoservice.Statistics; |
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public class DepartureFetcher { |
public class DepartureFetcher { |
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enum TrainType{ |
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STOG, |
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REGIONAL |
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} |
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Logger logger = Logger.getLogger(DepartureFetcher.class.getName()); |
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Map<String, DepartureBean> cache; |
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StationDAO stationDao = new StationDAO(); |
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private boolean useAzureSite; |
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private int replyTimeout; |
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public DepartureFetcher(boolean azureSite, int cacheTimeout, int replyTimeout) { |
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this.replyTimeout = replyTimeout; |
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useAzureSite = azureSite; |
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cache = new TimeoutMap<String,DepartureBean>(cacheTimeout); |
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} |
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@SuppressWarnings("unchecked") |
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public List<DepartureBean> lookupDepartures(int stationID) throws Exception { |
public DepartureBean cachedLookupDepartures(int stationID, boolean arrival) throws Exception { |
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List<DepartureBean> departureList = new ArrayList<DepartureBean>(); |
final String key = "" + stationID + ":" + arrival; |
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Connection conn = null; |
DepartureBean departureBean = cache.get(key); |
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try |
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{ |
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conn = DBConnection.getConnection(); |
if (departureBean == null) { |
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departureBean = lookupDepartures(stationID,arrival); |
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String SQL = "SELECT stationcode_fjrn, stationcode_stog FROM trainstations WHERE id=" + stationID; |
cache.put(key, departureBean); |
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Statement stmt = conn.createStatement(); |
} else { |
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ResultSet rs = stmt.executeQuery(SQL); |
Statistics.getInstance().incrementDepartureCacheHits(); |
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logger.info("Departure: Cache hit " + key); //remove before production |
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if (rs.next()) { |
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String code = rs.getString( 1 ); |
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if (! rs.wasNull() ) { |
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List<DepartureBean> list = lookupDepartures(code, "FJRN"); |
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departureList.addAll(list); |
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} |
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code = rs.getString(2); |
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if (! rs.wasNull() ) { |
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List<DepartureBean> list = lookupDepartures(code, "S2"); |
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departureList.addAll(list); |
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} |
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Collections.sort( departureList ); |
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} |
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} finally { |
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if (conn != null && !conn.isClosed() ) { |
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conn.close(); |
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} |
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} |
} |
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return departureBean; |
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} |
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return departureList; |
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public DepartureBean lookupDepartures(int stationID, boolean arrival) throws Exception { |
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DepartureBean departureBean = new DepartureBean(); |
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StationBean station = stationDao.getById(stationID); |
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departureBean.stationName = station.getName(); |
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if (station.getRegional() != null) { |
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DepartureBean tempBean = lookupDepartures(station.getRegional(), TrainType.REGIONAL, arrival); |
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departureBean.departureEntries.addAll( tempBean.departureEntries ); |
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departureBean.notifications.addAll(tempBean.notifications); |
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} |
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if (station.getStrain() != null) { |
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DepartureBean tempBean = lookupDepartures(station.getStrain(), TrainType.STOG, arrival); |
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departureBean.departureEntries.addAll( tempBean.departureEntries ); |
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departureBean.notifications.addAll(tempBean.notifications); |
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} |
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Collections.sort( departureBean.departureEntries ); |
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return departureBean; |
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} |
} |
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public List<DepartureBean> lookupDepartures(String stationcode, String type) throws Exception { |
public DepartureBean lookupDepartures(String stationcode, TrainType type, boolean arrival) throws Exception { |
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if (useAzureSite == true) { |
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List<DepartureBean> departureList = new ArrayList<DepartureBean>(); |
return lookupDeparturesAzureSite(stationcode, type, arrival); |
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} else { |
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return lookupDeparturesWwwSite(stationcode, type, arrival); |
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} |
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} |
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private String getTypeStringAzure(TrainType type) { |
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switch (type) { |
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case STOG: |
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return "S-Tog"; |
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case REGIONAL: |
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return "Fjerntog"; |
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default: |
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return ""; //Can not happen |
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} |
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} |
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private String getTypeStringWww(TrainType type) { |
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switch (type) { |
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case STOG: |
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return "S2"; |
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case REGIONAL: |
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return "FJRN"; |
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default: |
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return ""; //Can not happen |
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} |
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} |
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public DepartureBean lookupDeparturesAzureSite(String stationcode, TrainType type, boolean arrival) throws Exception { |
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final WebClient webClient = new WebClient(); |
DepartureBean departureBean = new DepartureBean(); |
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webClient.setTimeout(1000); |
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webClient.setJavaScriptEnabled(false); |
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String typeString = getTypeStringAzure(type); |
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final HtmlPage page = webClient.getPage("http://www.bane.dk/visStation.asp?ArtikelID=4275&W=" + type + "&S=" + stationcode); |
String arrivalDeparture = (arrival==false) ? "Afgang" : "Ankomst"; |
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HtmlElement table = page.getElementById("afgangtabel"); |
stationcode = URLEncoder.encode(stationcode,"ISO-8859-1"); |
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DomNodeList<HtmlElement> tableRows = table.getElementsByTagName("tr"); |
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String uri = "http://trafikinfo.bane.dk/Trafikinformation/AfgangAnkomst/" + arrivalDeparture + "/" + stationcode + "/" + typeString + "/UdvidetVisning"; |
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for (HtmlElement currentRow : tableRows) { |
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String rowClass = currentRow.getAttribute("class"); |
//logger.info("URI: " + uri); |
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if (rowClass != null && rowClass.toLowerCase().contains("station") ) { |
JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), replyTimeout); |
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DomNodeList<HtmlElement> fields = currentRow.getElementsByTagName("td"); |
CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk"); |
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DepartureBean departure = new DepartureBean(); |
Document page = (Document) breaker.invoke(wrapper); |
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String time = fields.get(0).asText(); |
String tableName = arrival == false ? "afgangtabel" : "ankomsttabel"; |
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departure.setTime(time); |
Element table = page.getElementById(tableName); |
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int updated = extractUpdated( fields.get(1) ); |
if (table != null) { |
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departure.setUpdated(updated); |
Elements tableRows = table.getElementsByTag("tr"); |
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String trainNumber = fields.get(2).asText(); |
boolean tidsstregExists = (table.getElementsByAttributeValue("class", "Tidsstreg").size() > 0); |
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departure.setTrainNumber(trainNumber); |
boolean passedTidsstreg = false; |
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String destination = fields.get(3).asText(); |
for (Element currentRow : tableRows) { |
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departure.setDestination(destination); |
String rowClass = currentRow.attr("class"); |
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String origin = fields.get(4).asText(); |
if (tidsstregExists == true && passedTidsstreg == false) { |
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departure.setOrigin(origin); |
if (currentRow.getElementsByAttributeValue("class", "Tidsstreg").size() > 0) { |
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passedTidsstreg = true; |
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String location = fields.get(5).asText(); |
} else { |
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departure.setLocation(location); |
continue; |
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} |
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String status = fields.get(6).asText(); |
} |
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departure.setStatus(status); |
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if (rowClass != null && rowClass.toLowerCase().contains("station") ) { |
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String note = fields.get(7).asText(); |
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departure.setNote(note); |
Elements fields = currentRow.getElementsByTag("td"); |
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departureList.add(departure); |
DepartureEntry departure = new DepartureEntry(); |
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String time = fields.get(0).text(); |
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if (time.equals("")) |
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time = "0:00"; //Bane.dk bug work-around |
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departure.setTime(time); |
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int updated = extractUpdated( fields.get(1) ); |
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departure.setUpdated(updated); |
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String trainNumber = fields.get(2).text(); |
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if (type == TrainType.STOG) //If it is S-train we need to extract the trainNumber |
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trainNumber = trainNumber + " " + extractTrainNumber(fields.get(2)); |
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departure.setTrainNumber(trainNumber); |
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String destination = fields.get(3).text(); |
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departure.setDestination(destination); |
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String origin = fields.get(4).text(); |
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departure.setOrigin(origin); |
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String location = fields.get(5).text(); |
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departure.setLocation(location); |
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String status = fields.get(6).text().trim(); |
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departure.setStatus(status); |
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String note = extractNote( fields.get(7) ); |
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departure.setNote(note); |
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departure.setType(typeString); |
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departureBean.departureEntries.add( departure ); |
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} |
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} |
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} else { |
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logger.warning("No departures found for station=" + stationcode + ", type=" + type); |
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} |
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Element notifDiv = page.getElementById("station_planlagte_text"); |
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if (notifDiv != null) { |
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Elements tables = notifDiv.getElementsByTag("table"); |
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for (Element tab : tables) { |
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Elements anchors = tab.getElementsByTag("a"); |
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if (anchors.size() == 2) { |
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departureBean.notifications.add( anchors.get(1).text() ); |
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} |
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} |
} |
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} |
} |
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return departureList; |
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return departureBean; |
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} |
} |
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private int extractUpdated(HtmlElement updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif" |
public DepartureBean lookupDeparturesWwwSite(String stationcode, TrainType trainType, boolean arrival) throws Exception { |
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DepartureBean departureBean = new DepartureBean(); |
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String type = getTypeStringWww(trainType); |
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String uri = "http://www.bane.dk/visStation.asp?ArtikelID=4275&W=" + type + "&S=" + stationcode; |
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JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), replyTimeout); |
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CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk"); |
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Element page = (Element) breaker.invoke(wrapper); |
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String tableName = arrival == false ? "afgangtabel" : "ankomsttabel"; |
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Element table = page.getElementById(tableName); |
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if (table != null) { |
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Elements tableRows = table.getElementsByTag("tr"); |
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for (Element currentRow : tableRows) { |
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String rowClass = currentRow.attr("class"); |
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if (rowClass != null && rowClass.toLowerCase().contains("station") ) { |
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Elements fields = currentRow.getElementsByTag("td"); |
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DepartureEntry departure = new DepartureEntry(); |
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String time = fields.get(0).getAllElements().get(2).text(); |
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if (time.equals("")) |
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time = "0:00"; //Bane.dk bug work-around |
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departure.setTime(time); |
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int updated = extractUpdated( fields.get(1) ); |
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departure.setUpdated(updated); |
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String trainNumber = fields.get(2).text(); |
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if (type.equalsIgnoreCase("S2")) //If it is S-train we need to extract the trainNumber |
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trainNumber = trainNumber + " " + extractTrainNumber(fields.get(2)); |
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departure.setTrainNumber(trainNumber); |
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String destination = fields.get(3).text(); |
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departure.setDestination(destination); |
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String origin = fields.get(4).text(); |
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departure.setOrigin(origin); |
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String location = fields.get(5).text(); |
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departure.setLocation(location); |
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String status = fields.get(6).text().trim(); |
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departure.setStatus(status); |
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String note = extractNote( fields.get(7) ); |
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departure.setNote(note); |
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departure.setType(type); |
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departureBean.departureEntries.add(departure); |
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} |
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} |
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} else { |
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logger.warning("No departures found for station=" + stationcode + ", type=" + type); |
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} |
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return departureBean; |
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} |
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private int extractUpdated(Element updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif" |
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int updated = -1; |
int updated = -1; |
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DomNodeList<HtmlElement> updatedImgs = updatedTd.getElementsByTagName("img"); |
Elements updatedImgs = updatedTd.getElementsByTag("img"); |
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String updatedStr = updatedImgs.get(0).getAttribute("src"); |
String updatedStr = updatedImgs.get(0).attr("src"); |
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if (updatedStr != null) { |
if (updatedStr != null) { |
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for (int i=0; i<updatedStr.length(); i++) { |
for (int i=0; i<updatedStr.length(); i++) { |
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return updated; |
return updated; |
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} |
} |
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private String extractNote(Element noteTd) { |
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String note = noteTd.text().trim(); |
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Elements elems = noteTd.getElementsByClass("bemtype"); |
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if (elems.size() > 0 && note.charAt(note.length()-1) == 'i') |
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note = note.substring(0,note.length() -1 ); |
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return note; |
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} |
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private String extractTrainNumber(Element trainTd) { |
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Element anchorElement = trainTd.getElementsByTag("a").get(0); |
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String href = anchorElement.attr("href"); |
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int pos = href.lastIndexOf('/'); |
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String number = href.substring(pos+1); |
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return number; |
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} |
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//test |
//test |
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public static void main(String args[]) throws Exception{ |
/* |
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public static void main(String args[]) throws Exception { |
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DepartureFetcher f = new DepartureFetcher(); |
DepartureFetcher f = new DepartureFetcher(); |
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List<DepartureBean> deps = f.lookupDepartures("AR", "FJRN"); |
List<DepartureBean> deps = f.lookupDepartures("AR", "FJRN"); |
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for(DepartureBean d : deps) { |
for(DepartureBean d : deps) { |
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} |
} |
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System.out.println("--------------------------"); |
System.out.println("--------------------------"); |
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} |
}*/ |
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} |
} |